Feat: Alt+Drag to clone - Vue Nodes (#6789)

## Summary

Replicate the alt+drag to clone behavior present in litegraph.

## Changes

- **What**: Simplify the interaction/drag handling, now with less state!
- **What**: Alt+Click+Drag a node to clone it

## Screenshots (if applicable)



https://github.com/user-attachments/assets/469e33c2-de0c-4e64-a344-1e9d9339d528



<!-- Add screenshots or video recording to help explain your changes -->

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-6789-WIP-Alt-Drag-to-clone-Vue-Nodes-2b16d73d36508102a871ffe97ed2831f)
by [Unito](https://www.unito.io)

---------

Co-authored-by: github-actions <github-actions@github.com>

tests-ui/tests/renderer/extensions/vueNodes/components/LGraphNode.test.ts

@@ -6,7 +6,6 @@ import type { ComponentProps } from 'vue-component-type-helpers'
 import { createI18n } from 'vue-i18n'
 
 import type { VueNodeData } from '@/composables/graph/useGraphNodeManager'
-import { TransformStateKey } from '@/renderer/core/layout/injectionKeys'
 import LGraphNode from '@/renderer/extensions/vueNodes/components/LGraphNode.vue'
 import { useVueElementTracking } from '@/renderer/extensions/vueNodes/composables/useVueNodeResizeTracking'
 
@@ -15,6 +14,17 @@ const mockData = vi.hoisted(() => ({
   mockExecuting: false
 }))
 
+vi.mock('@/renderer/core/layout/transform/useTransformState', () => {
+  return {
+    useTransformState: () => ({
+      screenToCanvas: vi.fn(),
+      canvasToScreen: vi.fn(),
+      camera: { z: 1 },
+      isNodeInViewport: vi.fn()
+    })
+  }
+})
+
 vi.mock('@/renderer/core/canvas/canvasStore', () => {
   const getCanvas = vi.fn()
   const useCanvasStore = () => ({
@@ -105,14 +115,7 @@ function mountLGraphNode(props: ComponentProps<typeof LGraphNode>) {
         }),
         i18n
       ],
-      provide: {
-        [TransformStateKey as symbol]: {
-          screenToCanvas: vi.fn(),
-          canvasToScreen: vi.fn(),
-          camera: { z: 1 },
-          isNodeInViewport: vi.fn()
-        }
-      },
+
       stubs: {
         NodeHeader: true,
         NodeSlots: true,
@@ -172,14 +175,6 @@ describe('LGraphNode', () => {
           }),
           i18n
         ],
-        provide: {
-          [TransformStateKey as symbol]: {
-            screenToCanvas: vi.fn(),
-            canvasToScreen: vi.fn(),
-            camera: { z: 1 },
-            isNodeInViewport: vi.fn()
-          }
-        },
         stubs: {
           NodeSlots: true,
           NodeWidgets: true,